SPRUJ10E May   2022  – May 2025

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Preface: Read This First
    1. 2.1 Sitara MCU+ Academy
    2. 2.2 If You Need Assistance
    3. 2.3 Important Usage Notes
  6. 2Kit Overview
    1. 3.1 Introduction
    2. 3.2 Kit Contents
    3. 3.3 Specification
      1. 3.3.1 Key Features
      2. 3.3.2 Component Identification
      3. 3.3.3 Functional Block Diagram
    4. 3.4 Device Information
    5. 3.5 BoosterPacks
    6. 3.6 Compliance
    7. 3.7 Security
  7. 3Board Setup
    1. 4.1 Power Requirements
      1. 4.1.1 Power Input Using USB Type-C Connector
      2. 4.1.2 Power Status LEDs
      3. 4.1.3 Power Tree
    2. 4.2 Push Buttons
    3. 4.3 Boot Mode Selection
  8. 4Hardware Description
    1. 5.1  Functional Block Diagram
    2. 5.2  GPIO Mapping
    3. 5.3  Reset
    4. 5.4  Clock
    5. 5.5  Memory Interface
      1. 5.5.1 QSPI
      2. 5.5.2 Board ID EEPROM
    6. 5.6  Ethernet Interface
      1. 5.6.1 Ethernet PHY #1 - CPSW RGMII/ICSSM
      2. 5.6.2 Ethernet PHY #2: CPSW RGMII/ICSSM
      3. 5.6.3 LED Indication in RJ45 Connector
    7. 5.7  I2C
    8. 5.8  Industrial Application LEDs
    9. 5.9  SPI
    10. 5.10 UART
    11. 5.11 MCAN
    12. 5.12 FSI
    13. 5.13 JTAG
    14. 5.14 Test Automation Header
    15. 5.15 LIN
    16. 5.16 MMC
    17. 5.17 ADC and DAC
    18. 5.18 EQEP and SDFM
    19. 5.19 EPWM
    20. 5.20 BoosterPack Headers
    21. 5.21 Pinmux Mapping
  9. 5EVM Revision Design Changes
    1. 6.1 Rev A Design Changes
  10. 6Hardware Design Files
  11. 7References
    1. 8.1 Reference Documents
    2. 8.2 Other TI Components Used in This Design
  12.   Trademarks
  13. 8Revision History

4.18 EQEP and SDFM

The AM263x LaunchPad internally muxes the eQEP and SDFM signals. The eQEP0 and SDFM1 instances of the AM263x are terminated to two headers (J24, J15). The eQEP2 and SDFM2 instances of the AM263x are terminated to two headers (J25, J16).

EQEP and SDFM Signal Mapping Figure 4-22 EQEP and SDFM Signal Mapping

All eQEP signals have series termination resistors between the AM263x SoC and the Voltage Level Translator (TXB0108RGYR). The voltage level shifter is responsible for translating the 3.3 V to 5 V.

SDFM0 is mapped to the BoosterPack Header rather than an independent header. Four of the SDFM0 signals are routed through a 2:1 Mux to offer alternate BoosterPack functionality. The select line of the mux is driven by an AM263x SoC GPIO signal.

Table 4-17 SDFM0 Mux
GPIO63 Condition Function of Mux
LOW Alternate BP functionality Selected Port A ↔ Port B
HIGH SDFM0 Selected Port A ↔ Port C